Effects of Gender Difference and Caffeine Supplementation on Anaerobic Muscle Performance
Chen HY, Wang HS, Tung K, Chao HH
International journal of sports medicine · 30 citas
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
- Gobierno
- Ministry of Science and Technology, Taiwan
Según 1 financiador declarado.
Publicación
- Publicado
- 2015-08-07 · Int J Sports Med · vol. 36 · número 12 · págs. 974–978
- Editorial
- Thieme Medical Publishers (Germany)
- Citado
- 39 citas · más que el 91% de estudios similares · 3.0× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 0 trabajos
- Acceso
- De pago
- Áreas de investigación
- Eating Disorders and Behaviors · Muscle metabolism and nutrition · Obesity, Physical Activity, Diet
- Palabras clave
- Anaerobic exercise, Caffeine, Medicine, Physical therapy, Physical medicine and rehabilitation, Internal medicine
- MeSH
- muscle, skeletal, humans, caffeine, double-blind method, sex factors, muscle fatigue, isometric contraction, beverages, female, male, young adult, biomarkers
4 autores
- H.-Y. Chen🇹🇼National Taiwan Normal University
- Hsuan-Ho Wang🇹🇼National Taiwan Normal University
- Kang Tung🇹🇼National Taiwan Normal University
- Hsiao-Han Chao🇹🇼National Taiwan University
Resumen
El texto original del estudio, en el idioma en que se publicó.
The primary purpose of this study was to investigate the effects of gender difference and caffeine supplementation to maximal voluntary isometric contractions (MVIC) and submaximal voluntary isometric contractions (T(lim)). 10 male (age: 20.10 ± 2.18 years, BMI: 22.23±1.96 kg/m(2)) and 10 female (age: 19.90±0.99 years, BMI: 21.76±2.65 kg/m(2)) elite collegiate athletes were recruited. Subjects ingested caffeine (6 mg/kg) or a placebo in a randomized, double-blind, placebo-control, and counter-balanced fashion. MVIC and T(lim) were measured after supplementations. T(lim) result was calculated based on the time to exhaustion of isometric contraction with 50% MVIC. Fatigue index (FI%) referred to the MVIC tested 20 s after the cessation of T(lim) test, and was indexed by the percentage of MVIC decline. No significant interaction effect was found between the gender factor and the supplementation factor for all dependent variables. Compared to the placebo, caffeine supplementation significantly increased MVIC (5.9%) and T(lim) (15.5%) (p<0.05) whereas it had no significant effect on FI%. This study demonstrates that caffeine supplementation at a 6 mg/kg dosage facilitates performances in MVIC and T(lim). The ergogenic effect of caffeine on muscle power and muscle endurance does not show a gender bias.
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